Pressure-wave switch



FIG. 1 is a front view of the pressure-wave switch of the presentinvention;

FIG. 2. is a rear view of the pressure-wave switch of FIG. 1;

FIG. 3 is a plan view of the pressure-wave switch of FIG. 1;

FIG. 4 is a bottom view of the pressure-wave switch of FIG. 1; and,

FIGS. 5-6 are respective side views of the pressure-wave switch of FIG.1.

The ornamental design for a pressure-wave switch, as shown anddescribed.